GB2189729A

GB2189729A - Device for pre-setting the tools of a platen press

Info

Publication number: GB2189729A
Application number: GB08709068A
Authority: GB
Inventors: Jean-Bernard De Compierre
Original assignee: Bobst SA
Current assignee: Bobst Mex SA
Priority date: 1986-04-30
Filing date: 1987-04-15
Publication date: 1987-11-04
Also published as: ES2005200A6; SE466688B; JPH0696238B2; US4763422A; CA1324885C; DE3714567C2; FR2598112A1; CH667232A5; GB2189729B; FR2598112B1; GB8709068D0; IT8712473A0; JPS62259796A; SE8701770L; SE8701770D0; DE8717633U1; IT1208286B; DE3714567A1

Description

GB 2 189 729 A SPECIFICATION is mounted on a carriage, not shown, for the

vertical shifting of the cradle 6 according to double arrow 12 Devicefor pre-setting thetools of a platen press and setting its angle according to double arrow 13.

Figure 2 is a partsectional viewof the pre-setting The present invention relatesto a devicefor 70 device shown in Figure 1. The cradle 6 is secured bya pre-setting tools such as thetools of a platen press, screw, not shown, against a guiding disk 14with an particularly, tools used in the delivery station of such innertoothed crown. On its circumferencethe a press. guiding disk is provided with several tension rollers Devices for pre-setting the upper and lowertools 16 which locate in a circular groove 17 tooled in a of a machinefor stripping the waste of a previously 75 crown 18 mounted in a carriage 19. The crown 18 cut blank are known. They usually resemble a includes a ring 20 with a circular plate 21 for setting pivotable table mounted at a given height between the play of the operating tension rollers 16 in the two frames and locked in a horizontal position, the circular groove 17. The tension rollers 16 are aim being to reproduce outside the machine the preferably ball bearings and compensate the forces operating conditions of the upper and lowertools in 80 generated by the overhanging load of the cradle 6.

the machine. Therefore, by means of the pre-setting The rotation of the guiding disk 14 is ensured by device, each element of the upper and lower tools is several rollers 22 mounted on its face opposite the positioned with regard to the waste stripped from cradle 6. The rollers 22 can run in a chambertooled in the sheet processed bythe platen press. However, theframe 25. The rotation of the cradle 6 around its with this known device, it is almost impossibleto 85 axle is performed by a toothed pinion 23which gain accessto the central area of large tools andto engagesthe innertoothed crown 15. Thetoothed modifythe planeforsetting thetools, astheir pinion 23 is mounted on the shaft of a reduction pivotting point resides in the central area. A device motor 24 which is preferably a motor allowing any ensuring to the user an easy pre-setting of the large position setting in the cradle 6. This reduction motor tools is not available in the art. 90 24 is mounted in the carriage 19 made of a U-shaped The present invention thus proposes a device frame 25 supporting on its flanges the rollers 26.

which alleviates or overcomes these drawbacks and These rollers run in a slide constituted by the legs 28 comprises with the ergonomic requirements for an of the column 9. The frame 25 is also provided with easy and optimi use of the device. rollers 29 running on the innerfaces 30 of the legs 28 The invention provides a device according to claim 95 to ensure the vertical guiding of the carriage. The 1. The invention will be described now by way of vertical shifting of the carriage is performed with two example only with particular reference to the telescopicjacks 31 mounted in supports 32 secured accompanying drawings. In the drawings: against the legs 28. The rod of these jacks 31 has Figure 1 is a schematic perspective view of a locking nuts 33 which engage a fixing piece 34 pre-setting device in accordance with the present 100 connecting the two flanges of the frame 25.

invention; The lower end of each of the legs 28 is mounted on Figure2 is a part sectional view of the pre-setting a toothed wheel 35 which has a projection 36 device shown in Figure 1, and engaging in a bushing 37 in the fixed part of the Figure 3 is a view in the direction A of Figure 2. pivoting stand 10. This part of the stand includes a Figure 1 is a schematic perspective view of a 105 housing for a cylinder stop 39 (see Figure 3). The pre-setting device 1 receiving upper and lowertools toothed wheel can turn on the cylinder stop 39,the provided with elements 4for stripping, when they column being maintained by means of the rollers 40 are mounted in the press, the waste of the sheets mounted on the fixed part 38 of the pivoting stand 10 previously cut in a cutting station of a platen press, and withholding the toothed wheel in its position.

not shown. A stripped sheet, not shown, or a 110 The fixed part 38 also comprises a support 41 where reproduction of it is laid between the tools on a one roller 40 at least is tightened. This support 41 transparent plate 5 forthe accurate positioning of the receives a reduction motor 42 the shaft of which elements 4 of the upper and lowertools 2 and 3 supports a pinion 43 which engages thetoothed which face each other. This pre-setting operation is wheel 35. The fixed part 38 of the pivoting stand 10 is well known. The device shown in Figure 1 could be 115 mounted on a base plate 44to be sealed eitheron the kept in a tool preparation room,for instance,to ground of the preparation room or on the stand of facilitatethe loading of the alreadysettools in a tool the machine, according to the particular application.

holderto be placed later in front of the delivery With such a construction the pre-setting device station of the platen press, for a fast change of tools. allows any height setting. It also allows the loading The device could also be placed nearthe delivery 120 of a tool holder, the tools of which can be arranged in station of the platen press, in orderto be taken to the any vertical position. As the cradle can pivot, the front of the station to change the tools and then operator can selectively position it so that it becomes removed to another area, if the operator prepares the very easyto reach the elements, even if they are tools forthe nextiob while the machine is running. placed in the center of a large tool.

The upper and lowertoois 2 and 3, as well as the 125 The present arrangementthus facilitates the transparent plate 5 are arranged in a cradle 6 on a operator's work and complies with ergonomic base plate 7 mounted on a turret 8 carried bya requirements. Besides, the easy setting of the column 9. The base of the column is supported on a deliverytools in a platen press, the device also can pivotable stand 10 for rotating the assemblycolumn load the already settools, either in the delivery 9 and cradle 6 according tothe arrow 11. Theturret8 130 station of the machine or in a tool holder.

2 GB 2 189 729 A 2

Claims

1. A device for use in presetting the tools of a platen press comprises a cradle supported for generally upwardly and downwardly movement by a generally upright support means, said cradle being mounted so that it can pivot about its axis.

2. A device as claimed in Claim 1,wherein the cradle can pivot in a generally horizontal plane about the generally upright axis of the support means.

3. Adevice as claimed in claim 1 or claim 2, wherein the cradle is integral with a turret mounted on a carriage which is generally vertically shiftable relative to the column, said column being mounted on a pivotable support.

4. A device according to claim 3, wherein said turret comprises a guide disk provided on its circumference with a plurality of tension rollers arrangedto run in agroovetooledina ring ofa crown integral with the carriage, further rollers run in a chamber in the frame of the carriage and said guide disk comprises an innertooled crown into which a toothed pinion mounted on the axle of a reduction motor on said carriage engages.

5. A device according to claim 3, wherein said carriage includes a frame provided with rollers running in a slide formed in the legs of the column, said frame also including rollers running on the inner faces of said legs, and said carriage is provided with a fixing piece receiving the rods of two telescopic jacks mounted in supports on said legs.

6. A device according to claim 3, wherein the pivoting stand comprises a fixed partwith a chamber fora cylinder stop on which a toothed wheel with a projection engages in a bushing on the fixed part, said fixed part being provided with rollers withholding the toothed wheel in its position and the fixed part of the pivoting stand having a supportfor the reduction motor, the axle of which supports a pinion engaging into the toothed wheel, said fixed part being mounted on a base plate.

7. A device for use in presetting the tools of a platen press substantially as hereinbefore described with reference to and as shown in the accompanying drawings.

Printed for Her Majesty's Stationery Office by Croydon Printing Company (UK) Ltd,9187, D8991685. Published by The Patent Office, 25 Southampton Buildings, London, WC2A l AY, from which copies maybe obtained.

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